IOReturn IOPlatformExpert::callPlatformFunction(const OSSymbol *functionName,
bool waitForFunction,
void *param1, void *param2,
void *param3, void *param4)
{
IOService *service, *_resources;
if (waitForFunction) {
_resources = waitForService(resourceMatching(functionName));
} else {
_resources = resources();
}
if (_resources == 0) return kIOReturnUnsupported;
service = OSDynamicCast(IOService, _resources->getProperty(functionName));
if (service == 0) return kIOReturnUnsupported;
return service->callPlatformFunction(functionName, waitForFunction,
param1, param2, param3, param4);
}
bool MacRISC2CPU::start(IOService *provider)
{
kern_return_t result;
IORegistryEntry *cpusRegEntry, *uniNRegEntry, *mpicRegEntry, *devicetreeRegEntry;
OSIterator *cpusIterator;
OSData *tmpData;
IOService *service;
const OSSymbol *interruptControllerName;
OSData *interruptData;
OSArray *tmpArray;
UInt32 maxCPUs, uniNVersion, physCPU;
ml_processor_info_t processor_info;
#if enableUserClientInterface
DFScontMode = 0;
fWorkLoop = 0;
DFS_Status = false;
GPU_Status = kGPUHigh;
vStepped = false;
#endif
// callPlatformFunction symbols
mpic_getProvider = OSSymbol::withCString("mpic_getProvider");
mpic_getIPIVector= OSSymbol::withCString("mpic_getIPIVector");
mpic_setCurrentTaskPriority = OSSymbol::withCString("mpic_setCurrentTaskPriority");
mpic_setUpForSleep = OSSymbol::withCString("mpic_setUpForSleep");
mpic_dispatchIPI = OSSymbol::withCString("mpic_dispatchIPI");
keyLargo_restoreRegisterState = OSSymbol::withCString("keyLargo_restoreRegisterState");
keyLargo_syncTimeBase = OSSymbol::withCString("keyLargo_syncTimeBase");
keyLargo_saveRegisterState = OSSymbol::withCString("keyLargo_saveRegisterState");
keyLargo_turnOffIO = OSSymbol::withCString("keyLargo_turnOffIO");
keyLargo_writeRegUInt8 = OSSymbol::withCString("keyLargo_writeRegUInt8");
keyLargo_getHostKeyLargo = OSSymbol::withCString("keyLargo_getHostKeyLargo");
keyLargo_setPowerSupply = OSSymbol::withCString("setPowerSupply");
uniN_setPowerState = OSSymbol::withCString(kUniNSetPowerState);
uniN_setAACKDelay = OSSymbol::withCString(kUniNSetAACKDelay);
pmu_cpuReset = OSSymbol::withCString("cpuReset");
ati_prepareDMATransaction = OSSymbol::withCString(kIOFBPrepareDMAValueKey);
ati_performDMATransaction = OSSymbol::withCString(kIOFBPerformDMAValueKey);
macRISC2PE = OSDynamicCast(MacRISC2PE, getPlatform());
if (macRISC2PE == 0) return false;
if (!super::start(provider)) return false;
// Get the Uni-N Version.
uniNRegEntry = fromPath("/uni-n", gIODTPlane);
if (uniNRegEntry == 0) return false;
tmpData = OSDynamicCast(OSData, uniNRegEntry->getProperty("device-rev"));
if (tmpData == 0) return false;
uniNVersion = *(long *)tmpData->getBytesNoCopy();
// Find out if this is the boot CPU.
bootCPU = false;
tmpData = OSDynamicCast(OSData, provider->getProperty("state"));
if (tmpData == 0) return false;
if (!strcmp((char *)tmpData->getBytesNoCopy(), "running")) bootCPU = true;
// Count the CPUs.
numCPUs = 0;
cpusRegEntry = fromPath("/cpus", gIODTPlane);
if (cpusRegEntry == 0) return false;
cpusIterator = cpusRegEntry->getChildIterator(gIODTPlane);
while (cpusIterator->getNextObject()) numCPUs++;
cpusIterator->release();
// [3830950] - The bootCPU driver inits globals for all instances (like gCPUIC) so if we're not the
// boot CPU driver we wait here for that driver to finish its initialization
if ((numCPUs > 1) && !bootCPU)
// Wait for bootCPU driver to say it's up and running
(void) waitForService (resourceMatching ("BootCPU"));
// Limit the number of CPUs to one if uniNVersion is 1.0.7 or less.
if (uniNVersion < kUniNVersion107) numCPUs = 1;
// Limit the number of CPUs by the cpu=# boot arg.
if (PE_parse_boot_arg("cpus", &maxCPUs))
{
if (numCPUs > maxCPUs) numCPUs = maxCPUs;
}
ignoreSpeedChange = false;
doSleep = false;
topLevelPCIBridgeCount = 0;
// Get the "flush-on-lock" property from the first cpu node.
flushOnLock = false;
cpusRegEntry = fromPath("/cpus/@0", gIODTPlane);
if (cpusRegEntry == 0) return false;
if (cpusRegEntry->getProperty("flush-on-lock") != 0) flushOnLock = true;
// Set flushOnLock when numCPUs is not one.
if (numCPUs != 1) flushOnLock = true;
// If system is PowerMac3,5 (TowerG4), then set flushOnLock to disable nap
devicetreeRegEntry = fromPath("/", gIODTPlane);
tmpData = OSDynamicCast(OSData, devicetreeRegEntry->getProperty("model"));
if (tmpData == 0) return false;
#if 0
if(!strcmp((char *)tmpData->getBytesNoCopy(), "PowerMac3,5"))
flushOnLock = true;
#endif
// Get the physical CPU number from the "reg" property.
tmpData = OSDynamicCast(OSData, provider->getProperty("reg"));
if (tmpData == 0) return false;
physCPU = *(long *)tmpData->getBytesNoCopy();
setCPUNumber(physCPU);
// Get the gpio offset for soft reset from the "soft-reset" property.
tmpData = OSDynamicCast(OSData, provider->getProperty("soft-reset"));
if (tmpData == 0)
{
if (physCPU == 0)
soft_reset_offset = 0x5B;
else
soft_reset_offset = 0x5C;
}
else
soft_reset_offset = *(long *)tmpData->getBytesNoCopy();
// Get the gpio offset for timebase enable from the "timebase-enable" property.
tmpData = OSDynamicCast(OSData, provider->getProperty("timebase-enable"));
if (tmpData == 0)
timebase_enable_offset = 0x73;
else
timebase_enable_offset = *(long *)tmpData->getBytesNoCopy();
// See if reset is needed on wake
resetOnWake = (provider->getProperty ("reset-on-wake") != NULL);
if (resetOnWake) {
vm_address_t reserveMem;
reserveMem = (vm_address_t)IOMallocAligned (PAGE_SIZE, PAGE_SIZE); // Get one page (which we keep forever)
if (reserveMem) {
// map it
reserveMemDesc = IOMemoryDescriptor::withAddress (reserveMem, PAGE_SIZE, kIODirectionNone, NULL);
if (reserveMemDesc) {
// get the physical address
reserveMemPhys = reserveMemDesc->getPhysicalAddress();
}
}
}
// On machines with a 'vmin' property in the CPU Node we need to make sure to tell the kernel to
// ml_set_processor_voltage on needed processors.
needVSetting = (provider->getProperty( "vmin" ) != 0);
// While techincally the Apollo7PM machines do need AACK delay, it is already set in the bootROM
// since we boot slow. We don't want the machine to switch AACKdelay off when we run DFS high so
// setting this to false will take care of the issue.
needAACKDelay = false;
if (bootCPU)
{
gCPUIC = new IOCPUInterruptController;
if (gCPUIC == 0) return false;
if (gCPUIC->initCPUInterruptController(numCPUs) != kIOReturnSuccess)
return false;
gCPUIC->attach(this);
gCPUIC->registerCPUInterruptController();
}
// Get the l2cr value from the property list.
tmpData = OSDynamicCast(OSData, provider->getProperty("l2cr"));
if (tmpData != 0)
{
l2crValue = *(long *)tmpData->getBytesNoCopy() & 0x7FFFFFFF;
}
else
{
l2crValue = mfl2cr() & 0x7FFFFFFF;
}
// Wait for KeyLargo to show up.
keyLargo = waitForService(serviceMatching("KeyLargo"));
if (keyLargo == 0) return false;
keyLargo->callPlatformFunction (keyLargo_getHostKeyLargo, false, &keyLargo, 0, 0, 0);
if (keyLargo == 0)
{
kprintf ("MacRISC2CPU::start - getHostKeyLargo returned nil\n");
return false;
}
// Wait for MPIC to show up.
mpic = waitForService(serviceMatching("AppleMPICInterruptController"));
if (mpic == 0) return false;
// Set the Interrupt Properties for this cpu.
mpic->callPlatformFunction(mpic_getProvider, false, (void *)&mpicRegEntry, 0, 0, 0);
interruptControllerName = IODTInterruptControllerName(mpicRegEntry);
mpic->callPlatformFunction(mpic_getIPIVector, false, (void *)&physCPU, (void *)&interruptData, 0, 0);
if ((interruptControllerName == 0) || (interruptData == 0)) return false;
tmpArray = OSArray::withCapacity(1);
tmpArray->setObject(interruptControllerName);
cpuNub->setProperty(gIOInterruptControllersKey, tmpArray);
tmpArray->release();
tmpArray = OSArray::withCapacity(1);
tmpArray->setObject(interruptData);
cpuNub->setProperty(gIOInterruptSpecifiersKey, tmpArray);
tmpArray->release();
setCPUState(kIOCPUStateUninitalized);
// necessary bootCPU initialization is done, so release other CPU drivers to do their thing
// other drivers need to be unblocked *before* we call processor_start otherwise we deadlock
if (bootCPU)
publishResource ("BootCPU", this);
if (physCPU < numCPUs)
{
processor_info.cpu_id = (cpu_id_t)this;
processor_info.boot_cpu = bootCPU;
processor_info.start_paddr = 0x0100;
processor_info.l2cr_value = l2crValue;
processor_info.supports_nap = !flushOnLock;
processor_info.time_base_enable =
OSMemberFunctionCast(time_base_enable_t, this, &MacRISC2CPU::enableCPUTimeBase); // [4091924]
// Register this CPU with mach.
result = ml_processor_register(&processor_info, &machProcessor, &ipi_handler);
if (result == KERN_FAILURE) return false;
processor_start(machProcessor);
}
// Before to go to sleep we wish to disable the napping mode so that the PMU
// will not shutdown the system while going to sleep:
service = waitForService(serviceMatching("IOPMrootDomain"));
pmRootDomain = OSDynamicCast(IOPMrootDomain, service);
if (pmRootDomain != 0)
{
kprintf("Register MacRISC2CPU %ld to acknowledge power changes\n", getCPUNumber());
pmRootDomain->registerInterestedDriver(this);
// Join the Power Management Tree to receive setAggressiveness calls.
PMinit();
provider->joinPMtree(this);
}
// Finds PMU and UniN so in quiesce we can put the machine to sleep.
// I can not put these calls there because quiesce runs in interrupt
// context and waitForService may block.
pmu = waitForService(serviceMatching("ApplePMU"));
uniN = waitForService(serviceMatching("AppleUniN"));
if ((pmu == 0) || (uniN == 0)) return false;
if (macRISC2PE->hasPMon) {
// Find the platform monitor, if present
service = waitForService(resourceMatching("IOPlatformMonitor"));
ioPMon = OSDynamicCast (IOPlatformMonitor, service->getProperty("IOPlatformMonitor"));
if (!ioPMon)
return false;
ioPMonDict = OSDictionary::withCapacity(2);
if (!ioPMonDict) {
ioPMon = NULL;
} else {
ioPMonDict->setObject (kIOPMonTypeKey, OSSymbol::withCString (kIOPMonTypeCPUCon));
ioPMonDict->setObject (kIOPMonCPUIDKey, OSNumber::withNumber ((long long)getCPUNumber(), 32));
if (messageClient (kIOPMonMessageRegister, ioPMon, (void *)ioPMonDict) != kIOReturnSuccess) {
// IOPMon doesn't need to know about us, so don't bother with it
IOLog ("MacRISC2CPU::start - failed to register cpu with IOPlatformMonitor\n");
ioPMonDict->release();
ioPMon = NULL;
}
}
}
if (macRISC2PE->hasPPlugin) {
IOService *ioPPlugin;
OSDictionary *ioPPluginDict;
// Find the platform plugin, if present
service = waitForService(resourceMatching("IOPlatformPlugin"));
ioPPlugin = OSDynamicCast (IOService, service->getProperty("IOPlatformPlugin"));
if (!ioPPlugin)
return false;
ioPPluginDict = OSDictionary::withCapacity(2);
if (ioPPluginDict) {
ioPPluginDict->setObject ("cpu-id", OSNumber::withNumber ((long long)getCPUNumber(), 32));
// Register with the plugin - same API as for platform monitor
if (messageClient (kIOPMonMessageRegister, ioPPlugin, (void *)ioPPluginDict) != kIOReturnSuccess) {
// ioPPlugin doesn't need to know about us, so don't bother with it
IOLog ("MacRISC2CPU::start - failed to register cpu with IOPlatformPlugin\n");
}
ioPPluginDict->release(); // Not needed any more
}
}
#if enableUserClientInterface
//
// UserClient stuff...
//
fWorkLoop = getWorkLoop();
if(!fWorkLoop)
{
IOLog("MacRISC2CPU::start ERROR: failed to find a fWorkLoop\n");
}
if(!initTimers())
{
IOLog("MacRISC2CPU::start ERROR: failed to init the timers\n");
}
#endif
registerService();
return true;
}
